Oil & Gas
| Sat 06 Dec 2025
Beijing, Dec. 6 -- PetroChina has sought patent for Self-cleaning Safety Filter Free of Disassembly and Washing and Use Method. This invention was developed by Hu Bin, Yang Yong, Yang Xiaohua, Cui Hangbo, Hou Xinli, Li Zhengtao, Wang Tong, Jin Xing, Liu Yuan, Yang Chengzhang, Wang Jusong, Li Xuanpeng, Ding Han, Liu Bin, He Xueyu..